Add "analyze" alongside "optimize" in introduction

Author: Pennycook

adoc/chapters/introduction.adoc

@@ -15,7 +15,7 @@ source files as normal {cpp} code, alongside any code intended to be run on a
 system's host processor.
 This concept, known as "`single-source`" programming, reduces the complexity of
 heterogeneous programming for developers and gives compilers greater
-opportunities to optimize across the host-device boundary.
+opportunities to analyze/optimize across the host-device boundary.
 
 // How does SYCL relate to C++?
 SYCL is designed to be as close to standard {cpp} as possible, and some